Protective cover for a tablet computer

ABSTRACT

Certain embodiments relate to a protective cover with a housing and a latch mechanism. The latch can be hingeably coupled to a back portion of the housing such that the latch is configured to rotate, via the hinge coupling, from a closed position to an open position. The latch can further be slideably coupled to the housing such that the latch is configured to laterally slide out from the back portion of the housing to an extended position, where the bottom side of the latch can be configured to couple to and secure an input device to the surface of the housing.

CROSS-REFERENCES TO RELATED APPLICATIONS

The present non-provisional application claims benefit under 35 U.S.C.§120 of U.S. Provisional Patent Application No. 61/800,850, filed onMar. 15, 2013, and entitled “Protective Cover for a Tablet,” both ofwhich are incorporated by reference in their entirety for all purposes.

The following non-provisional U.S. patent applications (including thisone) are being filed concurrently, and the entire disclosure of theother applications are incorporated by reference into this applicationin their entirety for all purposes:

-   application Ser. No. 13/854,010, filed Mar. 29, 2013;-   application Ser. No. 13/854,027, filed Mar. 29, 2013; and-   application Ser. No. 13/854,013, filed Mar. 29, 2013.

BACKGROUND

Tablet computers are increasingly being used by consumers due to theirportability and ease of use. However, the portability of the tabletcomputer introduces some disadvantages as it may not provide all thefunctionality of a more robust computing device, such as a laptop. Forexample, performing word processing on a touch-screen keyboard may becumbersome and less efficient. Consumers desiring the word processingfunctionality of a laptop may choose to attach a physical keyboard totheir tablet computer. Other consumers may desire using their tabletcomputer for media purposes, such as playing games or viewing movies.Some consumers may not use their tablet computer for a single purpose,but may use it for word processing, media purposes, and for a variety ofother uses.

Accordingly, what is desired are improved methods and devices forsolving some of the problems discussed above, while reducing at leastsome of the drawbacks described above.

BRIEF SUMMARY

Certain embodiments of the invention may include a protective coverincluding a housing with a surface having a front portion and a backportion, and a latch mechanism including a top side and a bottom side.The latch mechanism can be hingeably coupled to the back portion of thehousing such that the latch mechanism is configured to rotate, via thehinge coupling, from a closed position to an open position. The latchmechanism cn further be slideably coupled to the housing such that thelatch mechanism is configured to laterally slide out from the backportion of the housing to an extended position, where the bottom side ofthe latch mechanism can be configured to couple to and secure an inputdevice to the surface of the housing. In the closed position, the topside of the latch mechanism is flush with the surface of the housing andthe bottom side is embedded within the housing such that the latchmechanism does not protrude from the housing. In the open position, theopen position is configured such that the latch mechanism is rotatedrelative to the closed position and protrudes from the housing. In theextended position, the latch mechanism is laterally extended from theback of the housing.

In some cases, the latch mechanism can include a magnet operable tomagnetically couple the latch mechanism to the input device. The latchcan be operable to automatically rotate open in the presence of amagnetic field, where the angle rotation can be up to 90 degrees,although larger and smaller degrees of motion can be used. The inputdevice can be a tablet computer, a mini-tablet computer, a mobile phone,a personal digital assistant, or the like. The surface of the housingcan be configured to face a touch-sensitive surface of the tabletcomputer when the tablet computer is secured to the surface of thehousing. Furthermore, the surface of the housing can be verticallyaligned with the tablet computer when the latch mechanism is configuredin the extended position. In some aspects, the latch mechanism extendssubstantially along a full width of the back portion. The protectivecover may further include a plurality of keys (e.g., keyboard) disposedon the front portion of the housing, the keyboard configured to becommunicatively coupled to the input device.

In some embodiments, a method of securing an input device to aprotective cover includes receiving a surface of an input device on asurface of the protective cover, and automatically opening a latchmechanism from a closed position to an open position in response to theinput device being proximate to the latch mechanism. The latch mechanismcan be hingeably coupled to a back portion of the protective cover suchthat the latch mechanism is configured to rotate, via the hingecoupling, from the closed position to the open position. Furthermore,the latch mechanism can be slideably coupled to the protective coversuch that the latch mechanism is configured to laterally slide out formthe back portion of the protective cover to an extended position. Thelatch mechanism can include a top side and a bottom side, with the latchmechanism being configured to rotate, via the hinge, between the closedposition and the open position. The method can further include couplingto and securing the bottom side of the latch mechanism to the inputdevice, and sliding the latch mechanism laterally from a back portion ofthe protective cover to the extended position such that the surface ofthe protective cover is vertically aligned with the input device.

In some embodiments, the top side of the latch mechanism is flush withthe surface of the protective cover and the bottom side is embeddedwithin the protective cover such that the latch mechanism does notprotrude from the housing when the protective cover and input device areconfigured in the closed position. When in the open position, the latchmechanism may protrude from the protective cover such that the bottomside can couple to the input device. In some cases, the latch includes amagnet operable to magnetically couple the latch mechanism to the inputdevice. Furthermore, the latch may be operable to automatically openfrom the closed position to the open position in the presence of amagnetic field. The input device can be a tablet computer, a mini-tabletcomputer, a mobile phone, a personal digital assistant, or the like. Insome aspects, the protective cover includes a front portion and a backportion, where the latch extends substantially along a width of the backportion.

In further embodiments, a protective cover includes a housing with asurface having a back portion, the housing including a slanted trackdisposed within the back portion of the housing, the slanted trackincluding a lower end and an upper end. The housing further including alatch mechanism with an outer portion and an inner portion, the latchmechanism slideably coupled to the slanted track such that the latchmechanism is configured to slide between the closed position at thelower end of the slanted track to a raised position at the upper end ofthe slanted track. The latch mechanism can further be hingeably coupledto the slanted track such that the latch mechanism is configured torotate, via the hinge coupling, from the raised position to a latchedposition at the upper end of the slanted track.

In some aspects, in the closed position the outer portion of the latchmechanism is at the upper portion of the slanted track and flush withthe surface of the housing such that the latch mechanism does notprotrude from the surface of the housing, and the inner portion isembedded within the housing such that the inner portion is configured atthe lower end of the slanted track. The raised position the latchmechanism can be raised along the slanted track such that inner portionis at the upper portion of the slanted track and the outer portion isprotruding above the surface of the housing. In the latched position thelatch mechanism can be rotated relative to the raised position such thatthe inner portion of the latch mechanism is operable to attach to aninput device. The latch mechanism can include a magnet operable tomagnetically couple the latch mechanism to the input device. In somecases, the latch is operable to automatically move from the closedposition to the raised position in the presence of an external magneticfield. Furthermore, the latch can be operable to automatically move fromthe raised position to the closed position by gravitational force and insome cases in the absence of the external magnetic field.

In some embodiments, an additional magnet(s) provides a magnetic forceoperable to increase a retention strength of the latch, the retentionstrength being related to an amount of force required to remove theinput device from the latch. For example, a magnet can provide amagnetic force of a magnitude such that the retention strength of thelatch is greater than a combined weight of the apparatus and the inputdevice. Moreover, the retention strength of the latch can be reducedwhen the input device is coupled to the latch in the open position, andthe input device is moved past a threshold angle relative to thehousing. The magnets described above and throughout the document can beapplied to any of the embodiments described herein.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 depicts a perspective view of a protective cover with a latchmechanism configured to attach to a tablet computer, according to anembodiment of the invention.

FIG. 2 depicts a perspective view of the protective cover with a tabletcomputer configured thereon in a first user operable configuration,according to an embodiment of the invention.

FIG. 3 depicts a perspective view of the protective cover with a tabletcomputer configured thereon in a second user operable configuration,according to an embodiment of the invention.

FIG. 4 depicts a perspective view of protective cover with a latchmechanism configured to attach to a tablet computer 105, according to anembodiment of the invention.

FIG. 5A depicts a detached tablet computer coming into proximity withprotective cover, according to an embodiment of the invention.

FIG. 5B depicts tablet computer in contact with the protective cover,but not yet secured in a closed configuration via hinge, according to anembodiment of the invention.

FIG. 5C depict tablet computer in contact with the protective coverwhere each subsequent figure shows tablet computer being pushedsuccessively closer to hinge, according to an embodiment of theinvention.

FIG. 5D depict tablet computer in contact with the protective coverwhere each subsequent figure shows tablet computer being pushedsuccessively closer to hinge, according to an embodiment of theinvention.

FIG. 5E depict tablet computer in contact with the protective coverwhere each subsequent figure shows tablet computer being pushedsuccessively closer to hinge, according to an embodiment of theinvention.

FIG. 5F depicts tablet computer in contact with protective cover andbeing pushed closer to hinge, according to an embodiment of theinvention.

FIG. 5G depicts tablet computer in contact with protective cover andbeing pushed yet closer to hinge, according to an embodiment of theinvention.

FIG. 5H depicts tablet computer in contact with protective cover andpushed completely into a closed configuration such hinge contacts andsecures tablet computer to protective cover, according to an embodimentof the invention.

FIG. 5I illustrates an input device coupling to a protective cover in aclosed configuration, according to an embodiment of the invention.

FIG. 6 depicts a perspective view of a protective cover with a latchmechanism configured to attach to a tablet computer, according to anembodiment of the invention.

FIG. 7A depicts a process of attaching a tablet computer to a protectivecover, according to an embodiment of the invention.

FIG. 7B depicts a process of attaching a tablet computer to a protectivecover, according to an embodiment of the invention

FIG. 7C depicts tablet computer being pushed yet closer to hinge,according to an embodiment of the invention.

FIG. 7D depicts tablet computer in contact with protective cover,according to an embodiments of the invention.

FIG. 7E depicts tablet computer in contact with protective cover in afully closed clam-shell configuration, according to an embodiment of theinvention.

FIG. 7F illustrates an input device coupling to a protective cover in aclosed configuration, according to an embodiment of the invention.

FIG. 8A illustrates a simplified diagram of a latch structure for aprotective cover, according to an embodiments of the invention.

FIG. 8B depicts a process of attaching a tablet computer to a protectivecover, according to an embodiment of the invention.

FIG. 8C depicts tablet computer engaged with latch and securing thetablet computer 105 to protective cover.

FIG. 8D depicts latch moving back into a closed position once the tabletcomputer is removed, according to an embodiment of the invention.

FIGS. 9A-9E depict a latch with a vertical stopper in a protective coverto secure a tablet computer, according to an embodiment of theinvention.

FIGS. 10A-10D depict a movable keyboard in a protective cover, accordingto an embodiment of the invention.

FIG. 11 depicts a plurality of magnets embedded in a protective cover,according to an embodiment of the invention

FIG. 12 depicts a space bar with magnets disposed therein, according toan embodiments of the invention.

FIG. 13 depicts a particular number of magnets disposed in and/or arounda slot, according to an embodiment of the invention.

FIG. 14 illustrates a protective cover with a rubberized slot configuredto hold a tablet computer in an active configuration, according to anembodiment of the invention.

FIG. 15 illustrates a protective cover with a rubberized slot configuredto hold a tablet computer in a front-facing, active uprightconfiguration, according to an embodiment of the invention.

FIG. 16 illustrates a rubberized slot for a protective cover, accordingto an embodiment of the invention.

FIG. 17 illustrates a switch disposed in a slot, according to anembodiment of the invention.

FIG. 18 illustrates a switch disposed in a slot of a protective cover,according to an embodiment of the invention

FIG. 19 illustrates a switch disposed in a slot of a protective cover,according to an embodiment of the invention

FIG. 20A depicts a top view of a keyboard according to an embodiment ofthe invention.

FIG. 20B depicts a bottom row of the keyboard in FIG. 20A shown inisolation, according to an embodiment of the invention.

FIG. 20C-20D depict portions of the keyboard from FIG. 20A shown inisolation according to an embodiment of the invention.

FIG. 20E depicts a top view of a keyboard configured to specify inputsequences based on received keystrokes, according to an embodiment ofthe invention.

FIG. 21 is a simplified block diagram of an exemplary system 2100configured to operate the various protective cover systems discussedherein, according to certain embodiments of the invention.

DETAILED DESCRIPTION

Embodiments of the invention are directed to a protective cover for acomputing device. The protective cover may include a latch configured totranslate from the protective cover in a horizontal or diagonal manner.The protective cover may include a hinge with a stopper preventing overrotation of the hinge. The protective cover may include a sliding traythat allows for the computing device to engage into a slot in theprotective cover in a plurality of configurations. In some embodiments,the slot is configured with a switch that when activated by a computingdevice contacting the switch, places the keyboard in the protectivecover into a pre-defined mode of operation. The protective cover mayhouse magnets in a plurality of locations and configurations that allowthe protective cover and the computing device housed by the protectivecover to be oriented in a plurality of formations. A keyboard in theprotective cover may be configured with a specific layout of keys andthe functionality of a series of keystrokes may be pre-defined as aspecific operation or function.

FIG. 1 depicts a perspective view of a protective cover 100 with a latchmechanism 130 configured to attach to a tablet computer 105, accordingto an embodiment of the invention. In a closed configuration (notshown), the protective cover 100 can be configured to fit securely overa tablet computer 105 in a clam shell configuration to protect it fromdamage (e.g., scratches, dents, shock damage, etc.). A latch 130 isoperable to move from a closed position (as shown) to an open positionto attach to a portion of the tablet computer 105 (e.g., via magnetcoupling, mechanical coupling, etc.) to hold and maintain and secure theclam shell configuration. In an open position, the slot 120 can hold thetablet computer 105 in a number of different upright positions toprovide an optimum viewing angle for a user. The protective cover 100can further provide a number of input features and functions including,but not limited to, an alphanumeric keyboard 110 and media buttons (notshown).

The protective cover 100 includes a top side 102 and a bottom side 104.The latch 130 is integrated in the top side 102 of the protective cover100 and is configured to automatically pop out from a flush position(flush to the top side 102 of the protective cover 300) and attach tothe tablet computer 105 when the edge of the tablet computer 105 is inclose proximity to the latch 130, as shown in FIGS. 4-15. The auto-latchcapabilities can be performed by magnetic means, electro-magnetic means,mechanical means, motion detection, proximity detection, or any othertechnology that would be appreciated by one of ordinary skill in the artwith the benefit of this disclosure. For example, the protective cover100 can be operable to detect a magnet within the tablet computer 105and automatically open the latch 130 to affix or couple the tabletcomputer 105 to the protective cover 100 in the clam shell position.

FIG. 2 depicts a perspective view of the protective cover 100 with atablet computer 105 configured thereon in a first user operableconfiguration, according to an embodiment of the invention. In the firstuser operable configuration, the tablet computer 105 is positioned inthe slot 120 such that it is held in an upright position and facing thekeyboard 110 on the top side 102 of the protective cover 100. The latch130 can be configured in the closed configuration such that the latch130 is flush with the top side 102 of the protective cover 100 toprovide an aesthetically pleasing and sleek design. Although the tabletcomputer 105 is shown in one viewing angle in the first user operableconfiguration, it should be understood that the slot 120 can beconfigured to hold the tablet computer 105 in a number of viewing angleswhen configured to face the keyboard 110 side or the latch 130 side ofthe protective cover 100.

FIG. 3 depicts a perspective view of the protective cover 100 with atablet computer 105 configured thereon in a second user operableconfiguration, according to an embodiment of the invention. In thesecond user operable configuration, tablet computer 105 is positioned inthe slot 120 such that it is held in an upright position and facinglatch 130 on the top side 102 of protective cover 100. Latch 130 can beconfigured in the closed configuration such that latch 130 is flush withthe top side 102 of protective cover 100 to provide an aestheticallypleasing and sleek design. Although tablet computer 105 is shown in oneviewing angle in the second user operable configuration, it should beunderstood that slot 120 can be configured to hold tablet computer 105in a number of viewing angles when configured to face the keyboard 110side or the latch 130 side of protective cover 100.

Protective cover 100 can further include a number of media buttons 140(not shown) configured on the latch 130 side of the protective cover100. For example, media buttons 140 can include standard media transportfunctions including play, pause, fast forward, rewind, record, skip,main menu, and the like. In alternative embodiments, media buttons 140can be disposed on the bottom side 140 to perform a variety of mediafunctions when tablet computer 105 and protective cover 100 are in theclosed clam shell configuration.

Many more configurations, features, and functions can be incorporated inprotective cover 100 and the other embodiments described herein. Forexample, protective cover 100 can include a touch panel, a fullyconfigurable touch display, audio elements (e.g., speakers, etc.), orother input/output devices as required by design. In some cases,protective cover 100 can be water proof or submergible. Protective cover100 can be comprised of any suitable plastic, fabric, metal, or othermaterial that would be appreciated by one of ordinary skill in the artwith the benefit of this disclosure. In some cases, a solar panel (notshown) can be integrated, embedded, or disposed on the top side 102 orbottom side 104 of protective cover 100 as a power source.

According to some embodiments, additional features may be incorporatedto help better secure tablet computer 105 in each of its operableconfigurations. For example, friction pads can be incorporated where thetablet computer 105 makes contact with the protective cover 100 in theclamshell configuration to help prevent the tablet computer 105 fromsliding out of position. Furthermore, magnets can also be used alone orin combination with friction pads to better hold the tablet computer 105in the various configurations and operable configurations (e.g., clamshell, operable configurations, etc.), as further described with respectto FIGS. 18-20. Further still, some embodiments may include switches ordetection means to determine the configuration of the tablet computer105 with respect to protective cover 100. For example, reed switches maybe used in the slot 120 to determine the angle and/or position of thetablet computer 105 to ensure that protective cover 100 is in thecorrect mode of operation, as further discussed below with respect toFIGS. 17-19.

Latch Mechanism

FIG. 4 depicts a perspective view of protective cover 100 with a latchmechanism 130 configured to attach to a tablet computer 105, accordingto an embodiment of the invention. In some embodiments, protective cover100 can be slightly longer than tablet computer 105 to accommodate andprovide enough space for latch 130 to pop out and into position withoutbeing blocked by the tablet computer 105. For example, if the tabletcomputer is positioned to be flush against the back end (i.e., latch 130side) of protective cover 100, latch 130 would not be able to rotateopen since tablet 105 would be blocking it. In some embodiments,protective cover 100 and tablet computer 105 can be substantially thesame length with a fully functional auto-latch mechanism 130, as furtherdescribed in FIGS. 6-15. Latch 130 can be integrated (e.g., embedded)into protective cover 100 and operable in any suitable manner thatfunctions to secure the tablet computer 105 to the protective cover 300.For instance, the latch 350 may pop out (i.e., rotate out) of the bottomside 104 or the top side 102 of protective cover 100. In someembodiments, there may be multiple latches configured to attach ordetach tablet computer 105 to protective cover 100.

FIGS. 5A-5H depict a succession of stages for configuring the protectivecover 100 in a closed clamshell configuration, according to certainembodiments of the invention. FIG. 5A depicts a detached tablet computer105 coming into proximity with protective cover 100, according to anembodiment of the invention. FIG. 5B depicts tablet computer 105 incontact with the protective cover 300, but not yet secured in a closedconfiguration via hinge 130. FIGS. 5C-5E depict tablet computer 105 incontact with the protective cover 100 where each subsequent figure showstablet computer 105 being pushed successively closer to hinge 130. Ineach case, the hinge 130 remains flush with protective cover 100. FIG.5F depicts tablet computer 105 in contact with protective cover 100 andbeing pushed closer to hinge 130, according to an embodiment of theinvention. When tablet computer 105 is sufficiently close to hinge 350,the hinge pops out from the flush position by magnetic attraction withthe tablet computer 105. For example, a magnet (not shown) disposedwithin latch 130 is magnetically attracted to a magnet disposed in thetablet computer, causing latch 130 to rise (i.e., rotate upwards fromthe flush position). FIG. 5G depicts tablet computer 105 in contact withprotective cover 100 and being pushed yet closer to hinge 130, accordingto an embodiment of the invention. The tablet computer 105 (and magnetdisposed therein) is sufficiently close to latch 130 such that the latchis fully extended and in position to make contact and secure tabletcomputer 105 in a closed configuration. FIG. 5H depicts tablet computer105 in contact with protective cover 100 and pushed completely into aclosed configuration such hinge 130 contacts and secures tablet computer105 to protective cover 100, according to an embodiment of theinvention.

FIG. 5I illustrates an input device 105 coupling to a protective cover100 in a closed configuration, according to an embodiment of theinvention. Protective cover 100 includes a housing 102, which can be thebody of protective cover 100. Housing 102 can include slot 120 and latchmechanism 130. Housing 102 can include a front portion 111, which mayinclude a plurality of keys (not shown) disposed therein, and a backportion 112, which can include the latch mechanism 130. Furthermore,housing 102 can include a surface 104. Latch mechanism 130 can include atop side 135 and a bottom side 137. In some aspects, latch mechanism 130can be hingeably coupled or connected to the back portion 112 of housing102. The input device 105 can include a surface 108. For example,surface 108 can be any suitable display (e.g., touch sensitive screen,LCD screen, etc.), as would be appreciated by one of ordinary skill inthe art.

In some embodiments, latch mechanism 130 can be configured to couple toand secure input device 105 (e.g., surface 108) to surface 104 ofhousing 102. Furthermore, latch mechanism 130 can be configured torotate, via the hinge coupling, between a first configuration 180 and asecond configuration 190. In some embodiments, the first configurationis a closed position with top side 135 of latch mechanism 130 flush withsurface 104 of housing 102, and bottom side 137 of latch mechanism 130embedded within housing 102 such that latch mechanism 130 does notprotrude from the housing. Further, the second configuration 190 can bean open position such that latch mechanism 130 is rotated relative tothe closed position (e.g., first configuration 180) and protrudes fromhousing 102. In certain aspects, latch mechanism 130 is operable to berotated open from first configuration 180 to second configuration 190via the hinge coupling. As described above, latch mechanism 130 caninclude a magnet (not shown) operationally configured to couple thelatch mechanism to the input device 130 (e.g., tablet computer). In someembodiments, latch mechanism 130 is operable to automatically open fromfirst configuration 180 to second configuration 190 in the presence of amagnetic field. For example, input device 105 can include a magnetdisposed therein where, when brought in proximity to the magnet in latchmechanism 130, the latch rises due to the magnetic attraction betweenthe two magnets, as shown in FIGS. 5E-5H.

In certain embodiments, the magnet (not shown) in latch mechanism 130can provide a magnetic force operable to increase a retention strengthof the latch mechanism 130. The retention strength can be related to anamount of force required to remove the input device from the latchmechanism 130. For example, when detaching the tablet computer 105 fromthe protective cover 100. In some embodiments, the latch magnet(s) canprovide a magnetic force of a magnitude such that the retention strengthof the latch mechanism 130 is greater than a combined weight of theprotective cover 100 and the input device (e.g., tablet cover 105). Forexample, if a protective cover 100 and a tablet computer 105 were in theclosed clamshell configuration with the latch mechanism 130 magneticallycoupled to the tablet computer 105 (e.g., magnetically coupled toanother magnet disposed in tablet computer 105), a user could pick upthe combination of the protective cover 100 and tablet computer 105 withone hand (e.g., grasping only tablet cover 105) and the latch mechanism130 would not break the connection (i.e., magnetic coupling) with tabletcomputer 105. Thus, a user would typically have to overcome theretention strength to break the connection. In some cases, the retentionstrength of the latch can be reduced when the input device (e.g., tabletcomputer 105) is coupled to the latch in the open position, and theinput device is moved past a threshold angle relative to the housing. Inother words, a user moves tablet computer 105 from protective cover 100similar to the way a book is opened (e.g., protective cover 100 beingthe back cover resting on a surface and tablet computer 105 being thefront cover being opened at an angle relative to the back cover. Incertain embodiments, the threshold angle is typically greater than 45degrees. In further embodiments, the retention strength of latchmechanism 130 can be reduced when a lateral force is applied to theinput device (i.e., a force perpendicular to the magnetic force betweenlatch mechanism 130 and tablet computer 105).

Alternatively, other methods and/or features can be used to improve theretention strength of both the latch mechanism 130 and slot 120. Forexample, instead of magnets, other features like hooks and loops,retaining pins, brads, adhesives, electro-magnets, compounds exhibitingimproved coefficients of friction, suction, stiff hinges, stiff slots,and other means that would be appreciated by one of ordinary skill inthe art with the benefit of this disclosure.

FIG. 6 depicts a perspective view of a protective cover 600 with a latchmechanism 630 configured to attach to a tablet computer 105, accordingto an embodiment of the invention. The latch 630 can rotate into an openposition and slide out laterally toward the back of protective cover600, as further described below. The protective cover 600 includes a topportion 602 and a bottom portion 604. The top portion includes akeyboard 610, a slot 620, and a latch mechanism 630. In a closedconfiguration (not shown), the protective cover 100 can be configured tofit securely over a tablet computer 105 in a clam shell configuration toprotect it from damage (e.g., scratches, dents, shock damage, etc.).Latch 630 is operable to move from a closed position (as shown—embeddedwithin the top portion 602) to an open position to attach to a portionof the tablet computer 105 (e.g., via magnet coupling, mechanicalcoupling, etc.) to hold and maintain and secure the clam shellconfiguration. In an open position, the slot 620 can hold the tabletcomputer 105 in a number of different upright positions to provide anoptimum viewing angle for a user. The protective cover 100 can furtherprovide a number of input features and functions including, but notlimited to, an alphanumeric keyboard 610 and media buttons (not shown).

In some embodiments, the latch 130 is integrated in the top side 102 ofthe back of protective cover 100 and configured to automatically pop outfrom a flush position (flush to the top side 602) and attach to tabletcomputer 105 when the edge of tablet computer 105 is in close proximityto latch 130, as shown in FIGS. 7A-7E. The auto-latch capabilities canbe performed by magnetic means, electro-magnetic means, mechanicalmeans, motion detection, proximity detection, or any other technologythat would be appreciated by one of ordinary skill in the art with thebenefit of this disclosure. For example, protective cover 600 can beoperable to detect a magnet within the tablet computer 105 andautomatically open the latch 630 to affix or couple the tablet computer105 to protective cover 600 in the clamshell position.

FIG. 7A depicts a process of attaching a tablet computer 105 to aprotective cover 600, according to an embodiment of the invention. InFIG. 7A, tablet computer 105 is approaching hinge 630, but is not yetattached. Hinge 630 remains flush with protective cover 600. FIG. 7Bdepicts a process of attaching a tablet computer 105 to a protectivecover 600, according to an embodiment of the invention. In this case,tablet computer 105 is sufficiently close to hinge 350 such that hinge630 pops out from the flush position due to its magnetic attraction totablet computer 105. For example, a magnet (not shown) disposed withinlatch 630 is magnetically attracted to a magnet disposed in the tabletcomputer, causing latch 630 to rise (i.e., rotate upwards from the flushposition).

FIG. 7C depicts tablet computer being pushed yet closer to hinge 630,according to an embodiment of the invention. Tablet computer 105 (and amagnet disposed therein) is sufficiently close to latch 630 such thatlatch 630 is fully extended (i.e., rotated in a fully openconfiguration) and in a position to make contact with and secure tabletcomputer 105 in a closed clamshell configuration. FIG. 7D depicts tabletcomputer 105 in contact with protective cover 600, according to anembodiments of the invention. In addition to latch 630 being fullyextended in a fully open and rotated position, latch 630 is also pushedout laterally from the back of protective cover 600, thus allowingtablet computer 105 to be aligned with protective cover 600 when closedin the clamshell configuration. Protective cover 600 differs fromprotective cover 100 in this respect. In some embodiments, protectivecover 100 is longer (front-to-back) than tablet computer 105 such thatlatch 130 has enough room to rotate open and couple to tablet computer105, as shown in FIG. 4. Protective cover 600, in contrast, rotates open(or pivots) and laterally slides out from the back of protective cover600. Thus, protective cover 600 can be the same size as tablet computer105. FIG. 7E depicts tablet computer 105 in contact with protectivecover 600 in a fully closed clam-shell configuration, according to anembodiment of the invention. As shown, the tablet computer 105 andprotective cover 600 are aligned over one another and substantially thesame size. Latch 105 is engaged (e.g., coupled to) with tablet computer105, securing the two together. In some embodiments, once tabletcomputer 105 is detached from latch 630, it can rotate and slide backinto its initial position flush against top portion 602.

FIG. 7F illustrates an input device 105 coupling to a protective cover600 in a closed configuration, according to an embodiment of theinvention. Protective cover 600 includes a housing 602, which can be thebody of protective cover 100. Housing 602 can include slot 620 and latchmechanism 630. Housing 602 can include a front portion 611, which mayinclude a plurality of keys (not shown) disposed therein, and a backportion 612, which can include the latch mechanism 630. Furthermore,housing 602 can include a surface 604. Latch mechanism 630 can include atop side 635 and a bottom side 637. In some aspects, latch mechanism 630can be hingeably coupled or connected to the back portion 612 of housing602, such that latch mechanism 630 can rotate, via the hinge coupling,from closed position (first configuration) 680 to open position (secondconfiguration) 690, and slideably coupled to housing 602 such that latchmechanism 630 is configured to laterally slide out from back portion 612of housing 602 to an extended position (third configuration) 695. Incertain embodiments, the bottom side 637 of latch mechanism 630configured to couple to and secure an input device 105 to the surface604 of housing 602, such that surface 608 of input device 105 isopposite and adjacent to surface 604 of housing 602. For example,surface 608 can be any suitable display (e.g., touch sensitive screen,LCD screen, etc.), as would be appreciated by one of ordinary skill inthe art.

In some embodiments, the first configuration 680 is a closed positionwith top side 635 of latch mechanism 630 flush with surface 604 ofhousing 602 and the bottom side 637 of latch mechanism 630 is embeddedwithin housing 602 such that latch mechanism 630 does not protrude fromthe housing. The second configuration 190 can be an open position suchthat latch mechanism 630 is rotated relative to the closed position(e.g., first configuration 680) and protrudes from housing 602. Incertain aspects, latch mechanism 130 is operable to be rotated open fromfirst configuration 180 to second configuration 190 via the hingecoupling. The third configuration (extended position) 195 can beconfigured such that latch mechanism is laterally extended from the backportion 612 of housing 602. As described above, latch mechanism 630 caninclude a magnet (not shown) operationally configured to couple latchmechanism 630 to input device 130 (e.g., tablet computer). In someembodiments, latch mechanism 630 is operable to automatically open fromfirst configuration 180 to second configuration 190 in the presence of amagnetic field. For example, input device 105 can include a magnetdisposed therein where, when brought in proximity to the magnet in latchmechanism 130, the latch rises due to the magnetic attraction betweenthe two magnets, similar to the images of FIGS. 5E-5H.

FIG. 8A illustrates a simplified diagram of a latch structure for aprotective cover 700, according to an embodiments of the invention. Theprotective cover 800 includes a top portion 802 and a latch mechanism830 disposed therein. In a closed configuration (not shown), theprotective cover 100 can be configured to fit securely over a tabletcomputer 105 in a clam shell configuration to protect it from damage(e.g., scratches, dents, shock damage, etc.), similar to the protectivecovers 100 and 600, shown in FIGS. 4 and 6, respectively. In someembodiments, the latch 830 is configured on a slanted track 832 in thetop case (i.e., upper portion of protective cover 800 including topportion 802), such that hinge 830 can slide diagonally upwards from aflush position (i.e., flush with respect to top portion 802) in responseto a magnetic field. Once hinge 830 slides to the top of slanted track832 at, it can pivot and rotate at pivot point 834 causing the hinge toopen, similar to hinges 130 and 630 described above. In some cases,hinge 830 can slant backwards with rotation and can be triggered bymagnetic force, mechanical force, or other suitable means.

FIG. 8B depicts a process of attaching a tablet computer 105 to aprotective cover 800, according to an embodiment of the invention. InFIG. 8B, tablet computer 105 is approaching hinge 830 and issufficiently close such that hinge 630 begins to slide diagonallyupwards out from the flush position to the pivot point 834 due to itsmagnetic attraction to tablet computer 105. As shown in FIG. 8B, latch830 is automatically raised once the tablet computer (e.g., iPad) getsclose to latch 830. FIG. 8C depicts tablet computer 105 engaged withlatch 830 and securing the tablet computer 105 to protective cover 800,according to an embodiment of the invention. As shown, latch 830 hasslid up the slanted track 832 and is seated at pivot point 834 where itis rotated backwards to secure the tablet computer 105 in a fittingposition, such that tablet computer 105 and protective cover 800 areproperly aligned in the clamshell configuration. FIG. 8D depicts latch830 moving back into a closed position once the tablet computer 105 isremoved, according to an embodiment of the invention. In someembodiments, gravity and weight balance will cause hinge 830 to returnto the closed position (i.e., hinge 830 closed and flush with topportion 802) once the tablet computer 105 (and its magnetic field) aremoved away. It should be noted that other means may be used to movelatch 830 into its various operating positions (i.e., closed/openpositions). For example, mechanical means, pneumatic means, hydraulicmeans, or any suitable means as would be appreciated by one of ordinaryskill in the art with the benefit of this disclosure. In someembodiments, a user can physically manipulate latch 830 to close thelatch (i.e., closed and flush with top portion 802) or open latch 830 tocouple to tablet computer 105 and secure it in the clamshellconfiguration.

Referring back to FIG. 8D, in some embodiments, protective cover 800 caninclude a housing 802 with surface 804, which can be the body ofprotective cover 800. Housing 602 can include latch mechanism 830 with atop side 835 and a bottom side 837. Housing 802 can include a frontportion 811, which may include a plurality of keys (not shown) disposedtherein, and a back portion 812, which can include the latch mechanism830. In some aspects, housing 802 can include a slanted track 860disposed within back portion 812 of housing 802. The slanted track canhave a lower end 862 and an upper end 866.

In certain embodiments, latch mechanism 830 is slideably coupled toslanted track 860 such that latch mechanism 830 is configured to slidebetween the closed position at the lower end 862 of slanted track 860(see FIG. 8A) to a raised position at the upper end 866 of slanted track860 (see FIG. 8B), The latch mechanism can further be hingeably coupledto slanted track 860 such that latch mechanism 830 is configured torotate, via the hinge coupling, from the raised position (see FIG. 8B)to a latched position (see FIG. 8C) at the upper end 866 of slantedtrack 860, to couple to input device 105.

In some embodiments, in the closed position the outer portion 835 oflatch mechanism 830 is at the upper portion 866 of slanted track 860 andflush with surface 804 of housing 802, such that latch mechanism 830does not protrude from surface 804 of housing 802, and the inner portion837 of latch mechanism 803 is embedded within housing 802 such thataspects of the inner portion 837 is configured at the lower end ofslanted track 860, as shown, e.g., in FIG. 8A. In some cases, in theraised position, latch mechanism 830 is raised along slanted track 860such that inner portion 837 is at upper portion 866 of slanted track 860and outer portion 835 is protruding above the surface of housing 802, asshown, e.g, in FIG. 8B. In the latched position (e.g., see FIG. 8C),latch mechanism 830 can be rotated relative to the raised position(e.g., see FIG. 8B) such that inner portion 837 of latch mechanism 830is operable to attach to an input device 105, e.g., as shown in FIG. 8C.

Hinge Stopper

FIGS. 9A-9E depict a hinge 902 with a stopper 904 in a protective cover901 to secure a tablet computer 903, according to an embodiment of theinvention.

In FIG. 9A, the tablet computer 903 is in a closed position with respectto the protective cover 901. In FIG. 9A, the hinge 902 may be on a hingethat allows the hinge 902 a limited angle of rotation with respect tothe protective cover 901. In some embodiments the stopper may preventthe hinge 902 from rotating beyond a specific angle. In someembodiments, the stopper may prevent the hinge 902 and the tabletcomputer 903 from extending beyond a 100 degree angle. Other embodimentscontemplate the stopper preventing the hinge 902 and the tablet computer903 from extending beyond different angles.

FIG. 9B depicts the motion of the tablet computer 903 being lifted intoan opened position with respect to the protective cover 901. In someembodiments, when the tablet computer 903 is opened while engaged withthe hinge 902, the stopper in the protective cover 901 may prevent thetablet computer 903 from being opened beyond a certain angle. Forexample, as depicted in FIG. 9B, the tablet computer 903 is opened to aroughly 45 degree angle with respect to the protective cover 901. Insome embodiments, the hinge 902 and the tablet computer 903 can berotated to 100 degrees, at which point, the stopper prevents the hinge902 and the tablet computer 903 from rotating beyond 100 degrees. Insome embodiments, the application of pressure to the stopper causes thestopper to release and allows the hinge 902 to rotate beyond 100degrees. As noted above, other embodiments contemplated allow fordifferent angles of rotation. For example, some embodiments may includea stopper that prevent the hinge 902 from rotating beyond an angle lessthan 100 degrees, while other prevent the hinge 902 from rotating beyondan angle greater than 100 degrees.

FIG. 9C depicts the hinge 902 in the closed position. The hinge 902 maybe in the closed position when the tablet computer 903 is disengagedfrom the hinge 902 and the protective cover 901. In some embodiments,when the hinge 902 is in a closed position, the hinge 902 is containedwithin a recess in the protective cover 901 and is flush with the topsurface of the protective cover 901.

FIG. 9D depicts a forward view of the stopper 904 attached to theprotective cover 901. The hinge 902 is rotatable from a closed positionuntil the hinge 902 hits the stopper 904. In some embodiments, thestopper 904 may be fixed to the protective cover 901 such that thestopper 904 cannot be removed from the protective cover 901.

FIG. 9E depicts the hinge 902 removed from the body of the protectivecover 901. In some embodiments, when a large amount of force is appliedby the hinge 902 against the stopper 904, in order to prevent structuraldamage to the hinge 902 or the protective cover 901, the hinge 902 maypop out from the protective cover 901.

Sliding Tray

FIGS. 10A-10D depict a movable tray 1001 (which may also be referred toa as a movable keyboard tray) in a protective cover 1000, according toan embodiment of the invention. The movable keyboard tray 1001 may bedisposed in a housing affixed, attached or molded to the protectivecover 1000. A plurality of input members may be disposed on the movabletray. The movable keyboard tray 1001 may be configured to translate froma first position to a second position such that different recesses areopened in the protective cover 1000 when the movable keyboard tray 1001is translated between the first and second positions. The movablekeyboard tray 1001 may be configured to translate along a predefinedtrack in the housing. In some embodiments, the movable keyboard tray1001 may have wheels enabling translation.

FIG. 10A depicts the movable keyboard tray 1001 in a first position withrespect to the protective cover 1000. When the movable keyboard tray1001 is in the first position, a first recess 1002 is opened in the bodyof the protective cover 1000. As shown in FIG. 10B, when the movablekeyboard tray 1001 is in the first position, a tablet computer 1004 maybe placed in the recess at an angle that allows a user to access themovable keyboard tray 1001 and the front of the tablet computer 1004.This first configuration may allow the tablet computer 1004 to be placedin a position conducive to allow the user to interact with the movablekeyboard tray 1001 to send inputs to the tablet computer 1004. In otherembodiments, the tablet computer 1004 may be placed in the oppositedirection with the front of the tablet computer 1004 facing away fromthe movable keyboard tray 1001.

FIG. 10C depicts the movable keyboard tray 1001 in a second positionwith respect to the protective cover 1000. When the movable keyboardtray 1001 is in the second position, a second recess 1003 is opened inthe body of the protective cover 1000. As shown in FIG. 10D, when themovable keyboard tray 1001 is in the second position, the tabletcomputer 1004 may be placed in the recess at an angle that allows a userto access the front of the tablet computer 1004. This secondconfiguration may allow the tablet computer 1004 to be placed in aposition conducive to allow the user view content on the tablet computer1004 if the user does not require accessing the movable keyboard tray1001 or sending inputs to the tablet computer 1004 by the movablekeyboard 1001.

Magnets

FIG. 11 depicts a plurality of magnets embedded in a protective cover1100, according to an embodiment of the invention. Magnets can be usedto secure a tablet computer in both the closed (i.e., clamshellconfiguration) and active configurations (tablet computer 105 placed inslot in upright position).

Protective cover 1100 may include magnet(s) 1150 embedded in or aroundthe space bar of a keyboard affixed or attached to the protective cover1100, which can be configured to match the placement of magnets disposedwithin the tablet computer 105 to help hold the protective cover 1100and tablet computer 105 in a closed (i.e., clamshell) configuration. Forexample, FIG. 12 depicts a space bar 1200 with magnets 1250 disposedtherein, according to an embodiments of the invention. Magnets 1250 maybe arranged such that they are magnetically attracted to magnetsembedded in tablet computer 105 in the closed configuration. In someembodiments, magnets 1250 can be magnetically attracted to othermagnetic objects. For example, magnets 1250 may be attracted to a metalchassis or frame in tablet computer 105. Magnets 1250 can further bearranged in front of space bar 1200 and embedded in the case (i.e., themain body of protective cover 1100). In some embodiments, the magnets1250 in space bar 1200 can cause space bar 1200 to be magneticallyattracted to tablet computer 105 when the protective cover is in aclosed position. In some cases, the magnetic attraction causes the spacebar to slightly rise to contact the tablet computer 105. This can beadvantageous since support by the space bar, which typically does nothave characters or glyphs silk screened or printed thereon, may preventother keys and their printed characters from contacting tablet 105 inthe closed configuration and inadvertently wearing them off over time.

Protective cover 1100 can include magnets 1130 embedded in a hinge 1130to retain tablet computer 105 at its back end, as described above withrespect to FIGS. 4-8D.

In some embodiments, magnets can be disposed in or around the slot toimprove the ability for a protective cover to hold a tablet computer inthe active position without sliding or falling out (i.e., prevent upwardand lateral or sideways movement). For example, FIG. 13 depicts aplurality of magnets 1350 disposed in and/or around the slot 1320.Magnets 1350 can be arranged such that they are magnetically attractedto magnets embedded in the tablet computer 105 in the activeconfiguration. In some embodiments, magnets 1350 can be magneticallyattracted to other magnetic objects. For example, magnets 1350 may beattracted to a metal chassis or frame in tablet computer 105. AlthoughFIG. 13 depicts a particular number of magnets 1350 disposed in and/oraround slot 1320, any number of magnets can be used. For example, someembodiments may use more or fewer magnets. Furthermore, magnets 1350 canbe of any suitable size, shape, or composition. In some cases, magnets1350 can be embedded within the slot, disposed on the surface of theslot 1320, embedded within the case (i.e., not part of the slot 1320)but close enough to hold the tablet computer 105 in an upright position.Magnets 1250 can be arranged in any suitable configuration with respectto slot 1320 as required.

In certain embodiments, the one or more magnets 1350 disposed in oraround slot 1320 are configured to provide a magnetic force operable toincrease a retention strength of the slot. The retention strength can berelated to an amount of force required to budge or remove an inputdevice (e.g., tablet computer 105) from slot 1320 when the input deviceis configured in one of the plurality of upright configurations. Forexample, when an input device is placed in the slot in a forward-facingupright configuration, the retention strength determines the amount offorce required for a user to pull the input device out of the slot. Insome embodiments, magnets 1350 provide a magnetic force of a magnitudesuch that the retention strength of slot 1320 is greater than a combinedweight of the protective cover and the input device. For example, whenan input device is placed in the slot in a forward-facing uprightconfiguration, a user could grasp only tablet computer 105 and pick itup, thereby lifting the combination of the tablet computer 105 andprotective cover because the retention strength of the slot is strongenough to hold the combined weight of the combination of the two. Thismay be useful if a user wants to quickly pick up the combination withone hand and move it to a new location without worrying about tabletcomputer 105 fallout out of the slot. In some aspects, the retentionstrength of the slot can be reduced when the input device is laterallymoved along the slot from the one or more upright configurations or theinput device is moved a threshold angle from the one of the plurality ofupright configurations. For example, in the forward-facingconfiguration, tablet computer 105 may be resting in slot 1320 at a 72degree angle (e.g., see FIG. 15). By moving tablet computer 105 towards90 degrees and beyond, the retention strength of the slot can reducesuch that it is easier to remove the tablet computer 105 from the slotat steeper angles. The amount of angle required to reduce the retentionstrength can vary by design and would be appreciated by one of ordinaryskill in the art with the benefit of this disclosure.

According to some embodiments, additional features may be incorporatedto help better secure the tablet computer 105 in the active and closedconfigurations as shown in the various embodiments described herein. Forexample, friction pads can be disposed where the tablet computer 105makes contact with the protective cover in the keyboard configuration tohelp prevent the tablet computer 105 from sliding out of position.Moreover, slot 1320 can be raised from the top surface to provideadditional lateral grip (e.g., mechanical force) to the tablet computer105, e.g., by contacting the tablet computer 105 in a closedconfiguration, or providing more surface area to contact the tabletcomputer 105 in the active configuration. The slot can be comprised ofany suitable material. For instance, the slot 380 may comprise a dualinjected silicone.

It should be noted that the protective covers (e.g., 100, 400, 600,etc.) can be produced in different sizes, shapes, and configurations toaccommodate a variety of different computing devices in addition totablet computer(s) 105 including, but not limited to, smart phones,personal digital assistants, e-paper, mini-tablet computers, e-readers,and the like.

Rubberized Slot

In some embodiments, a rubberized slot may be used for improved frictionto better keep the tablet computer in a rear-facing and active uprightconfiguration. FIG. 14 illustrates a protective cover 1400 with arubberized slot 1420 configured to hold a tablet computer 105 in anactive configuration, according to an embodiment of the invention. Thetablet computer 105 is facing the back end of protective cover 1400 at a65 degree angle. Rubberized slot 1420 can be designed and/or configuredto support tablet computer 105 at any suitable viewing angle or multipleviewing angles based on the shape, depth, width, materials, etc. In anexemplary case, tablet computer 105 is supported upright at a 65 degreeangle due, in part, to features 1406 and 1407 of slot 1420. FIG. 15illustrates a protective cover 1400 with a rubberized slot 1420configured to hold a tablet computer 105 in a front-facing, activeupright configuration, according to an embodiment of the invention. Thetablet computer 105 is facing the front end of protective cover 1400 ata 72 degree angle. In an exemplary case, tablet computer 105 issupported upright at a 72 degree angle due, in part, to features 1408and 1409 of slot 1420. In some embodiments, rubberized slot 1420 cansupport tablet computer 105 in a number of angles due to the shape,depth, and materials used to make the slot 1420.

In some embodiments, the rubberized slot is overmolded. The overmoldingcan be operable to help keep tablet 105 in place against protectivecover 1400 when in the closed position. For example, the overmolding canprotrude high enough that it can contact protective cover 1400 in theclosed position such that a friction created by the overmolded rubbercan prevent the tablet from sliding around laterally while securedagainst the protective cover 1400.

FIG. 16 illustrates a rubberized slot 1420 for a protective cover 1400,according to an embodiment of the invention. Rubberized slot 1420 caninclude a co-molding silicon rubber 1424 disposed on top of an extrudedaluminum structure 1422. The silicon rubber provides high friction(i.e., an improved coefficient of friction) to hold tablet computer 105in place without moving or sliding upwards or laterally while positionedin rubberized slot 1420. The silicon rubber can also be used to preventsliding when tablet computer 105 is configured in the closed (clamshell)configuration with respect to protective cover 1400. In some cases, thesilicon rubber at the top of rubberized slot 1420 is configured tocontact a portion of tablet computer 105 to prevent lateral movement inthe closed configuration. Those of ordinary skill in the art wouldappreciate that other suitable materials can be used with rubberizedslot 1420 to improve the frictional properties of the rubberized slot.

In some embodiments, protective cover 1400 includes a housing 1402including a front portion 1411 and a back portion 1412. In some cases; aplurality of keys (e.g., alphanumeric keyboard) may be disposed in thefront portion 1411 of the housing. The slot 1420 can be disposed in thehousing 1402 at any suitable location. In FIG. 14, slot 1420 is disposedabove the plurality of keys (not shown). The slot can span a suitablewidth of housing 1402 and can be configured to hold an input device(e.g., tablet computer 105) in any of a plurality of uprightconfigurations. In some embodiments, slot 1420 spans the entire width ofhousing 1402. However, slot 1420 may only span a portion of the width of1402. Alternatively, multiple slots may be implemented and can bealigned in any suitable arrangement (e.g., longitudinally,latitudinally, diagonally, etc.). Certain embodiments include at least aforward-facing upright configuration such that the input device facesthe front portion 1411 of the housing 1402 (e.g., see FIG. 15), and atleast a backward-facing upright configuration such that the input devicefaces the back portion 1412 of the housing 1402 (e.g., see FIG. 14).

As described above, slot 1402, or a portion thereof, can be overmoldedwith a rubber compound to provide an improved coefficient of friction toreduce lateral slippage of the input device when held in the slot. Insome aspects, the overmolded portion protrudes above the surface of thehousing 1402 to that it can contact a surface of the input device 105when the surface of the input device is configured to be opposite andadjacent to the surface of the housing, as shown, e.g., in FIG. 7E. Therubber compound can be silicon-based rubber compound. For example, slot1420 can be molded and comprised of an extruded aluminum structure witha co-molded silicon rubber disposed thereon. In some embodiments, slot1420 can be configured to hold input device 105 in two or moreforward-facing upright configurations or two or more backward-facingupright configurations.

According to certain embodiments, one or more magnets can be disposed inor around the slot (e.g., see FIG. 13), where the magnets are configuredto improve the strength of the hold that the slot has on the inputdevice in the plurality of upright configurations.

Configuration Detection—Slot Switch

FIG. 17 illustrates a switch 1725 disposed in a slot 1720, according toan embodiment of the invention. The switch 1725 is configured to detectwhen a tablet computer 105 is placed in the active configuration andplaced in slot 1720. In some embodiments, switch 1725 can detect anorientation of the tablet computer 105 with respect to protective cover1700. For example, switch 1725 detect if tablet 105 is in a forwardfacing (i.e., toward the keyboard) active configuration (e.g., similarto FIG. 15), or a rear facing (i.e., toward the latch) activeconfiguration (e.g., similar to FIG. 14). Switch 1725 can be amechanical switch, magnetic reed switch, optical switch, touch sensitiveswitch, resistive switch, temperature sensitive switch, pressuresensitive switch, or any suitable switch to detect the presence oftablet computer 105 in slot 1720, as would be appreciated by one ofordinary skill in the art.

FIG. 18 illustrates a switch 1725 disposed in a slot 1720 of aprotective cover 1700, according to an embodiment of the invention.Although one switch 1725 is shown, multiple switches any number oflocations and/or configurations may be used to detect the presence orangle of the tablet computer 105 with respect to protective cover 1700.

FIG. 19 illustrates a switch 1725 disposed in a slot 1720 of aprotective cover 1700, according to an embodiment of the invention.Tablet computer 105 is shown in the forward facing active configuration.In certain embodiments, the switch 1725 can perform a number of otherfunctions in addition to detecting the presence and/or orientation(angle) of the tablet computer in slot 1720. For example, activatingslot 1725 can be configured to turn tablet computer 105 from anoff-state to an on-state. In some aspects, the configuration of tablet105 (e.g., forward-facing or rear-facing) may selectively turn oncertain features related to the active configuration. For example, someembodiments may activate an alphanumeric keyboard when tablet computer105 is in a forward-facing active configuration, but power down otherfunctions not typically used in this configuration. Similarly, someembodiments may activate media control buttons (not shown) disposedtoward the rear of protective cover 1700 when tablet computer 105 is ina rear-facing active configuration media. Some embodiments may shut downwireless functions (i.e., internet connections, bluetooth functionality,etc.) as well. It should be understood that the examples provided hereinare not exhaustive and other power saving implementations of shuttingdown unused or uncommonly used functions can be used as required. Insome aspects, switch 1725 operation and the functions associatedtherewith are controlled by a processor (e.g., processor 2110 of FIG.21).

Macros

Keyboard macros allow short sequences of keystrokes inputted by a userto be transformed, or modified, into other sequences of keystrokes. Insome embodiments, the short of sequence of keystrokes can be modifiedinto a longer, more time-consuming sequence of keystrokes. In this way,frequently used or repetitive sequences of keystrokes can be automated.In other embodiments, the short of sequence of keystrokes can be used torepresent an operation (e.g., opening/closing a program or application,textual manipulations such as delete, copy, paste and cut operations).In some embodiments, the short sequences of keystrokes may be two ormore keystrokes.

FIG. 20A depicts a top view of a keyboard 2000 configured to specifyinput sequences based on received keystrokes. The keyboard 2000 may alsobe referred to as a data input device. The keyboard 2000 may becomprised of a plurality of input members, which may also be referred toas keys or buttons, disposed on the keyboard 2000. For example, when theuser interacts with the keyboard 2000 by depressing the “spacebar”button 2002, while simultaneously depressing the “fn” button 2001, theinputted keystrokes may be modified to simulate an open applicationoperation. In some embodiments, this macro may open an applicationmanager.

In another embodiment, when the user interacts with the keyboard 2000 bydepressing the “delete” button 2003, while simultaneously depressing the“fn” button 2001, the inputted keystrokes may be modified to simulate aforward delete operation. This keyboard macro represents the “rightarrow” button followed by the “delete” button.

In other embodiments, other operations or sequences of keystrokes can bemapped to inputted short sequences of keystrokes.

Functional Advantages with New Keyboard Layout

Bottom Row Keys

FIG. 20A depicts a top view of a keyboard 2000 according to anembodiment of the invention. The keyboard 2000 may also be referred toas a data input device. The keyboard 2000 may be comprised of aplurality of input members, which may also be referred to as keys,disposed on the keyboard 2000.

FIG. 20B depicts a bottom row of the keyboard 2000 in FIG. 20A shown inisolation, according to an embodiment of the invention. The bottom rowof the keyboard 2000 is configured such that an oversized elongatedinput member key 2002 is centrally located on the bottom row of thekeyboard 2000. In FIG. 20B, the oversized elongated key 2002 is depictedas the “space bar” key. The oversized elongated key 2002 is adjacent tothree keys 2004 of generally the same dimensions on the left side of theoversized elongated key 2002. In some embodiments, each one of the threekeys 2004 has one dimension in common with the oversized elongated key2051. In FIG. 20B, the three keys to the left of the oversized elongatedkey 2051 are depicted as a “fn” (or function) key, an “alt/option” (oralternate/option) key, and a “cmd” (or command) key.

The oversized elongated key 2002 is also adjacent to a single inputmember or key 2006, located to the right of the oversized elongated key2002. The single key 2006 may also have dimensions identical to thethree keys 2004 to the left of the oversized elongated key 2002. In FIG.20B, the key to the right of the oversized elongated key 2002 isdepicted as a “ctrl” (or control) key.

In some embodiments, and as depicted in FIG. 20B, the widths of theoversized elongated key 2002, the three keys 2004, and the single key2006, are of generally the same dimension.

Adjacent to the single key 2006, along the bottom row of the keyboard2000 are four smaller sized input members or keys 2008. In someembodiments, the smaller sized keys 2008 may have widths that are halfor less than half of the widths of the oversized elongated key 2002. InFIG. 20B, the smaller sized keys 2008 are depicted as the directional orarrow keys (i.e., the up, down, left, and right keys).

In other embodiments, the functions of the oversized elongated key 2002,the three keys 2004, the single key 2006, and the smaller sized keys2008 may be different than those depicted in FIG. 20B.

Second Row Key Sizes

FIG. 20C depicts a portion of the keyboard 2000 from FIG. 20A shown inisolation according to an embodiment of the invention. In the row abovethe bottom row of the keyboard 2000, above the smaller sized keys 2008,the keyboard 2000 may house a set of keys 2010. In FIG. 20C, the set ofkeys 2010 is depicted as the “greater than”/“period mark” key, the“question mark”/“slash” key, and the “shift”/“caps lock” key. In thisembodiment, the functions of the “shift” key and “caps lock” key, whichare typically separate keys, has been combined onto one key (the thirdkey in the set of keys 2010. In this embodiment, the size of the“shift”/“caps lock” key is similar to the two adjacent keys in the setof keys 2010. In other embodiments, the functions of the set of keys2010 may be different than those depicted in FIG. 20C.

In FIG. 20C, the combined length of the smaller sized keys 2008 issuperimposed over the set of keys 2010. The combined length of thesmaller sized keys 2008 is depicted as a dashed line 2012. As depictedin FIG. 20C, the combined length of the set of keys 2010 extends beyondthe combined length of the smaller sized keys 2008. In the embodimentdepicted in FIG. 20C, a number of the set of keys 2010 equal to thecombined length of the smaller sized keys 2008 is less than three. Insome embodiments, the number of the set of keys 2010 equal to thecombined length of the smaller sized keys 2008 is at leasttwo-and-a-half. In other embodiments, the number of the set of keys 2010equal to the combined length of the smaller sized keys 2008 is at leastthree. In other words, in some embodiments there are at leasttwo-and-a-half keys positioned directly above the arrow keys. In afurther embodiment there are at least three full keys positioneddirectly above the arrow keys. And in a further embodiment there aremore than three full keys positioned directly above the arrow keys. Thislayout configuration can be significant for relatively small sizedkeyboard layouts, where maximizing the size and/or position offrequently used keys can make a significant difference in the usabilityor ergonomics of the keyboard.

Left Side Keys

In some embodiments, the left side of the keyboard 2000 is configuredwith one or more alphanumeric character keys as the first keys on thesecond row and third row from the top of the keyboard 2050. FIG. 20Ddepicts a portion of the keyboard 2000 from FIG. 20A shown in isolationaccording to an embodiment of the invention. As depicted in FIG. 20D,the left side of the keyboard 2050 includes a “□” (or “Home/Esc”) key2020, a “Q”/“lock” key 2022, an “A”/“tab” key 2024, a “shift”/“capslock” key 2026, and the “fn” (or function) key 2028. In this embodiment,the functions of the “shift” key and “caps lock” key, which aretypically separate keys, has been combined onto a single key 2026.Similarly, the keys representing the letters “A” and “Q” have beencombined with keys typically reserved solely for function keys. The “A”key has been merged with the “tab” key on key 2024. The “Q” has beenmerged with the “lock” key on key 2022. As depicted in FIG. 20D, therelative positions of the merged alphabet keys 2022 and 2024 aregenerally the same as on typical keyboards, providing a consistency to auser. In some embodiments, the functions of keys 2020-2028 may bedifferent than those depicted in FIG. 20D.

In some embodiments, key 2024 (the “A” key) may be elongated and have alarger length than the other 25 alphabet character keys. In FIG. 20D,the length of key 2024 is represented by line segment 2030. In suchembodiments, key 2022 (the “Q” key) may have the same dimensions as allother alphabet keys on the keyboard 2000. In some embodiments, key 2022may be the same dimensions as the other alphabet keys, and may besmaller than key 2024. Key 2026 may have a slightly larger width thanthe alphabet keys.

System Diagram

FIG. 21 is a simplified block diagram of an exemplary system 2100configured to operate the various protective cover systems discussedherein, according to certain embodiments of the invention. The system2100 includes a processor 2110, a power management system 2120, a powersupply (e.g., batteries, rechargeable batteries, accumulator(s),renewable power sources (e.g., solar)) 2140, an output device 2150, akeyboard matrix 2160, a communications block 2170, and configurationdetection system 2180. Each of the system blocks 2120-2170 can be inelectrical communication with processor 2110. System 2100 may furtherinclude additional systems (e.g., audio systems, touch screeninput/outputs, etc.) that are not shown or discussed to preventobfuscation of the novel features described herein. Similarly, somesystems 2100 may include fewer systems (e.g., no photovoltaic elements,no keyboard, etc.) as required by design.

In certain embodiments, processor 2110 comprises one or moremicroprocessors (μCs) and is configured to control the operation ofsystem 2100. Alternatively, processor 2110 may include one or moremicrocontrollers (MCUs), digital signal processors (DSPs), or the like,with supporting hardware/firmware (e.g., memory, programmable I/Os,etc.), as would be appreciated by one of ordinary skill in the art. Theprocessor 2110 can be configured to operate the protective cover systems(or more generally, an input device) described herein.

In certain embodiments, power management system 2120 of system 2100 isconfigured to manage power distribution, recharging, power efficiency,and the like. Power management system 2120 can control the powerdistribution by the batteries 2140 or other power sources (e.g.,photovoltaic cells).

Communications system 2170 is configured to provide wirelesscommunication between the various protective cover systems describedherein and a mobile input device (e.g., tablet computer), according toan embodiment of the invention. Communications system 2170 can becontrolled by processor 2110 and configured to provide radio-frequency(RF) communication with any of a wide variety of wireless communicationprotocols including, but not limited to, Bluetooth, WiFi and infra-redwireless systems. The various protective cover systems may optionallycomprise a hardwired connection to their associated input devices. Forexample, system 2100 may provide a Universal Serial Bus (USB) cable toprovide electronic communication to the attached input device or otherexternal devices. Other embodiments of the invention may utilizedifferent types of cables or connection protocol standards to effectuatea hardwired communication with outside entities. In one non-limitingexample, a USB cable can be used to provide power to a protective coverto charge batteries 2140 and simultaneously support data communicationbetween system 2100 and the input device.

In some embodiments, processor 2110 integrates processing and RFcommunication functions, in addition to scanning and controllingkeyboard matrix 2160 and/or other input devices, monitoringconfiguration detection mechanisms 2180 (e.g., the relay switches,mechanical switches 1725, etc., used to detect keyboard modes, mediabutton modes, closed configurations, etc.), controlling LEDs (not shown)and the like. Keyboard matrix 2160 can include a mechanical keyboarddisposed in the protective cover. User inputs to the keyboard matrix canbe wirelessly coupled to the tablet computer by way of processor 2110and communication system 2170. Keyboard 2160 can include a key framedisposed therein (not shown) including a means of configurationdetection. For example, relay switches (not shown) can be activated by aprotective cover frame to determine when the keyboard is configured inthe various operations modes of operation, as further described below.Alternatively, keyboard matrix 2160 may be configured in anon-conventional format (e.g., number pad, application-specific keyarrangements, or other grouping of a number of buttons). The individualkeys may be mechanical (e.g., scissor keys, plunger keys, etc.), softkeys on a display, or other suitable type of input interface.

The above description is illustrative and is not restrictive. Manyvariations of the invention will become apparent to those skilled in theart upon review of the disclosure. The scope of the invention should,therefore, be determined not with reference to the above description,but instead should be determined with reference to the pending claimsalong with their full scope or equivalents.

It is to be understood that the examples and embodiments described aboveare for illustrative purposes only and that various modifications orchanges in light thereof will be suggested to persons skilled in the artand are to be included within the spirit and purview of this applicationand scope of the appended claims. Therefore, the above descriptionshould not be understood as limiting the scope of the invention asdefined by the claims.

What is claimed is:
 1. A protective cover comprising: a housingincluding a surface with a front portion and a back portion; and a latchmechanism including a top side and a bottom side, the latch mechanismhingeably coupled to the back portion of the housing such that the latchmechanism is configured to rotate, via the hinge coupling, from a closedposition to an open position, the latch mechanism slideably coupled tothe housing such that the latch mechanism is configured to laterallyslide out from the back portion of the housing to an extended position,the bottom side of the latch mechanism configured to couple to andsecure an input device to the surface of the housing, the closedposition configured such that the top side of the latch mechanism isflush with the surface of the housing and the bottom side is embeddedwithin the housing such that the latch mechanism does not protrude fromthe housing, the open position configured such that the latch mechanismis rotated relative to the closed position and protrudes from thehousing, the extended position configured such that the latch mechanismis laterally extended from the back of the housing.
 2. The protectivecover of claim 1 wherein the latch mechanism includes a magnet operableto magnetically couple the latch mechanism to the input device.
 3. Theprotective cover of claim 1 wherein the latch is operable toautomatically rotate open in the presence of a magnetic field.
 4. Theprotective cover of claim 1 wherein the latch includes an angle ofrotation of up to 90 degrees.
 5. The protective cover of claim 1 whereinthe input device is a tablet computer.
 6. The protective cover of claim5 wherein the surface of the housing is configured to face atouch-sensitive surface of the tablet computer when the tablet computeris secured to the surface of the housing, and wherein the surface of thehousing is vertically aligned with the tablet computer when the latchmechanism is configured in the extended position.
 7. The protectivecover of claim 1 wherein the latch mechanism extends substantially alonga full width of the back portion.
 8. The protective cover of claim 1wherein the housing includes a keyboard disposed on the front portion ofthe housing, the keyboard configured to be communicatively coupled tothe input device.
 9. A method of securing an input device to aprotective cover, the method comprising: receiving a surface of an inputdevice on a surface of the protective cover; automatically opening alatch mechanism from a closed position to an open position in responseto the input device being proximate to the latch mechanism, the latchmechanism hingeably coupled to a back portion of the protective coversuch that the latch mechanism is configured to rotate, via the hingecoupling, from the closed position to the open position, and the latchmechanism slideably coupled to the protective cover such that the latchmechanism is configured to laterally slide out form the back portion ofthe protective cover to an extended position, the latch mechanismincluding a top side and a bottom side, and the latch mechanismconfigured to rotate, via the hinge, between the closed position and theopen position; coupling to and securing the bottom side of the latchmechanism to the input device; sliding the latch mechanism laterallyfrom a back portion of the protective cover to the extended positionsuch that the surface of the protective cover is vertically aligned withthe input device.
 10. The method of claim 9 wherein in the closedposition, the top side of the latch mechanism is flush with the surfaceof the protective cover and the bottom side is embedded within theprotective cover such that the latch mechanism does not protrude fromthe housing.
 11. The method of claim 10 wherein in the open position,the latch mechanism protrudes from the protective cover such that thebottom side can couple to the input device.
 12. The method of claim 9wherein the latch includes a magnet operable to magnetically couple thelatch mechanism to the input device.
 13. The method of claim 9 whereinthe latch is operable to automatically open from the closed position tothe open position in the presence of a magnetic field.
 14. The method ofclaim 9 wherein the input device is a tablet computer.
 15. The method ofclaim 9 wherein the protective cover includes a front portion and a backportion, wherein latch extends substantially along a width of the backportion.
 16. A protective cover comprising: a housing including asurface with a back portion, the housing including a slanted trackdisposed within the back portion of the housing, the slanted trackincluding a lower end and an upper end; and a latch mechanism includingan outer portion and an inner portion, the latch mechanism slideablycoupled to the slanted track such that the latch mechanism is configuredto slide between the closed position at the lower end of the slantedtrack to a raised position at the upper end of the slanted track, thelatch mechanism hingeably coupled to the slanted track such that thelatch mechanism is configured to rotate, via the hinge coupling, fromthe raised position to a latched position at the upper end of theslanted track, wherein in the closed position the outer portion of thelatch mechanism is at the upper portion of the slanted track and flushwith the surface of the housing such that the latch mechanism does notprotrude from the surface of the housing, the inner portion is embeddedwithin the housing such that the inner portion is configured at thelower end of the slanted track, wherein in the raised position the latchmechanism is raised along the slanted track such that inner portion isat the upper portion of the slanted track and the outer portion isprotruding above the surface of the housing, and wherein in the latchedposition the latch mechanism is rotated relative to the raised positionsuch that the inner portion of the latch mechanism is operable to attachto an input device.
 17. The protective cover of claim 16 wherein thelatch mechanism includes a magnet operable to magnetically couple thelatch mechanism to the input device.
 18. The protective cover of claim16 wherein the latch is operable to automatically move from the closedposition to the raised position in the presence of an external magneticfield.
 19. The protective cover of claim 18 wherein the latch isoperable to automatically move from the raised position to the closedposition by gravitational force.
 20. The protective cover of claim 18where the latch is operable to automatically move from the raisedposition to the closed position by gravitational force and in theabsence of the external magnetic field.
 21. The apparatus of claim 17wherein the magnet provides a magnetic force operable to increase aretention strength of the latch, the retention strength being related toan amount of force required to remove the input device from the latch.22. The apparatus of claim 21 wherein the magnet provides a magneticforce of a magnitude such that the retention strength of the latch isgreater than a combined weight of the apparatus and the input device.23. The apparatus of claim 21 wherein the retention strength of thelatch is reduced when the input device is coupled to the latch in theopen position, and the input device is moved past a threshold anglerelative to the housing.